What can happen when lost fluid is not replaced adequately?

When lost fluid is not replaced adequately, dehydration can occur, leading to a range of health issues such as diminished physical performance, fatigue, and confusion. Severe dehydration may result in electrolyte imbalances, affecting critical bodily functions, and can cause complications like kidney stones or urinary tract infections. In extreme cases, it can lead to heat-related illnesses or even organ failure, highlighting the importance of proper fluid intake.